31results about How to "Stable fluidization" patented technology

The invention relates to a coal powder conveying device which comprises a coal grinder, wherein a raw coal inlet is formed in the coal grinder; an outlet of the coal grinder is connected with an inlet of a coal powder filter; an outlet positioned in the lower side of the coal powder filter is connected with a spiral feeder, a normal pressure cabin and a lock bucket through pipelines in sequence from top to bottom; an outlet pipeline of the lock bucket is communicated with a carrier gas pipeline and is connected with an inlet of a feeding cabin above the coal powder filter through the carrier gas pipeline; an outlet in the bottom of the feeding cabin is connected with a mechanical feeding device below the feeding cabin; an outlet positioned in the lower side of the mechanical feeding device is connected with a gas coning part and a burning nozzle of a gasification furnace through pipelines in sequence from top to bottom, and coal powder is sprayed into the gasification furnace through the burning nozzle; the burning nozzle of the gasification furnace is lower than the feeding cabin, and the lock bucket is arranged below the burning nozzle of the gasification furnace. The coal powder conveying device has the characteristics of stability in coal powder conveying, accuracy in metering, energy conservation, consumption reduction and the like, and is capable of reducing carrier gas entering the furnace.

The invention relates to a combined fluidized bed slag cooler, which comprises a body, a wind box, an air distributing device, a slag inlet pipe, a slag outlet pipe, an air inlet pipe and an air outlet pipe. The body is provided with the slag inlet pipe, and the bottom of the body is connected with the slag outlet pipe. The lower part of the body is provided with the air distributing device and connected with the wind box of the air inlet pipe, and the top of the body is connected with the air outlet pipe. The slag outlet pipe is provided with a spraying pipe for air intake inside to make thethree working areas with different flowing states formed from the lower part to the upper part in the body, the lower part is a spraying area, the middle part is an annular fluidizing area, and the upper part is a suspending and settling area. The upper side of the spraying pipe is provided with a guide pipe. The outlet of the slag outlet pipe is provided with a mechanical slag outlet valve or a conveyor. The transverse and longitudinal mixing of gas-solid two-phase in the bed is obviously strengthened under the coaction of spraying air and fluidizing air. The problems of poor transverse mixing, easy accumulation of local bed materials, delamination, aggregation and the like of the fluidized bed slag cooler are solved. The furnace slag granules can be sufficiently and effectively cooled. The combined fluidized bed slag cooler is used for cooling bottom slag of a CFB boiler or other high-temperature solid granular materials.

A granulating, fluidizing and drying system is provided with a vibration fluidizing machine, a granulating machine, a cyclone separator, a water film dust remover, a crusher, a heating device and a cooling device. A ventilation area on a bed plate of the vibration fluidizing machine is formed by connecting round unit ventilation areas which are arranged in a line. A screening device is arranged at the tail end of the bed plate, air holes at the middle square positions of the unit ventilation areas on the bed plate are straight holes, and air holes on four bow-shaped parts of the unit ventilation areas on the bed plate are scale holes. The air outlet direction of the scale holes on two bow-shaped parts on the front part in each unit ventilation area is towards a box wall, and the air outlet direction of the scale holes on two bow-shaped parts on the rear part in each unit ventilation area is towards the connection position of two unit ventilation areas. Air inlet tubes corresponding to the unit ventilation areas one by one are arranged in an air chamber. The granulating, fluidizing and drying system can integrally achieve granulation, drying, cooling and screening, has high efficiency, treats exhausted tail gas, and is favorable for environment protection. By means of a special shape of the bed plate and the distribution of the air holes, fluidization of the vibration fluidizing machine is stable and free of dead corners.

The invention belongs to the field of toxic and refractory wastewater treatment and provides advanced oxidation reactors with two structural forms and toxic and refractory wastewater treatment devices with two structural forms. Each toxic and refractory wastewater treatment device integrates three stages of reactors through coupling. The invention further provides toxic and refractory wastewater treatment methods. According to the methods, persulfate and a micro-grade microelectrolysis material are added to first-stage reactors of the wastewater treatment devices, hydrogen peroxide and persulfate are added to second-stage reactors, the micro-grade microelectrolysis material is added to second-stage reactors, and then a Fenton-like reaction, a Fenton reaction and an activated persulfate oxidization reaction are effectively coupled in the three stages of reactors; with the adoption of the methods, the wastewater treatment effect can be enhanced and improved, and the wastewater treatment cost can be reduced.

The invention discloses a system and a method for trapping power plant smoke carbon dioxide by rice husk gasified coupled sodium silicate. The system comprises a rice husk gasified coupled Na2SiO3 preparation furnace, a charge electric appliance, an electric field auxiliary fluidized reactor, a material separation apparatus, a dissolving device and a filter which are connected in sequence, whereinan input end of the rice husk gasified coupled Na2SiO3 preparation furnace is an inlet for synthetic raw materials, O2 and Na2CO3 solution, and an output end is also connected with a first heat exchanger; a second heat exchanger is arranged in the electric field auxiliary fluidized reactor; the material separation apparatus is two levels of cyclone separators which are connected successively, theupper output end of the two levels of cyclone separators is connected with a third heat exchanger, a lower output end of the two levels of cyclone separators is connected to the electric field auxiliary fluidized reactor, and an additional pipeline is arranged to connect a fourth heat exchanger and a dissolving device; and an output end of the filter is connected to the rice husk gasified coupledNa2SiO3 preparation furnace. The system is organic combined with a coal fired power generation system, and the smoke of a coal fired power station exchanges heat with a bed body to keep the temperature constant, and the scheme is low in investment cost and low in energy consumption.